CVE-2023-28359
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA NoSQL injection vulnerability has been identified in the listEmojiCustom method call within Rocket.Chat. This can be exploited by unauthenticated users when there is at least one custom emoji uploaded to the Rocket.Chat instance. The vulnerability causes a delay in the server response, with the potential for limited impact.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA NoSQL injection vulnerability in Rocket.Chat's listEmojiCustom method allows unauthenticated users to inject malicious NoSQL queries when at least one custom emoji exists on the server, causing delayed server responses with potential for limited data extraction.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 6.0.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Rocket.Chat versionAccess the Rocket.Chat admin panel and navigate to 'About' section, or query the API endpoint '/api/info', or check the installed package.json fileAffected if version is below 6.0.0
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Verify custom emoji feature is activeCheck if any custom emojis are defined on the server via the admin panel under 'Emoji' or by querying the '/api/v1/emoji-custom.list' endpoint without authenticationAffected if at least one custom emoji exists on the server
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Confirm listEmojiCustom endpoint accessibilityAttempt an unauthenticated request to the API endpoint that exposes the listEmojiCustom method (typically /api/v1/emoji-custom.list)Affected if the endpoint responds without authentication
If Rocket.Chat version is below 6.0.0 and the server has at least one custom emoji defined, the environment is affected by this NoSQL injection vulnerability.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped6.0.0
Apply input sanitization and parameterized queries to the listEmojiCustom method, and update Rocket.Chat to the latest patched version if available.
6.0.0
- 1. Backup your Rocket.Chat database and configuration files before upgrading
- 2. Ensure you have at least one custom emoji uploaded (as the vulnerability requires this condition)
- 3. Upgrade Rocket.Chat to version 6.0.0 or later
- 4. Verify the upgrade was successful by checking the Rocket.Chat server version
- 5. Test that the listEmojiCustom method works correctly post-upgrade
- 6. Monitor server logs for any unusual activity
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-28359 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-28359 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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